package com.xbai.springcloud.service;

import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

import java.util.concurrent.TimeUnit;

/**
 * @author xbai
 * @Date 2021/5/20
 */
@Service
public class PaymentService {

    /**
     * 正常访问，肯定OK
     *
     * @param id
     * @return
     */
    public String paymentInfoOK(Integer id) {
        return "线程池：" + Thread.currentThread().getName() + " paymentInfoOK, id: " + id + "\t" + "O(∩_∩)O哈哈~";
    }

    @HystrixCommand(fallbackMethod = "paymentInfoTimeOutHandler", commandProperties = {
            @HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds", value = "5000")
    })
    public String paymentInfoTimeOut(Integer id) {
        int timeNumber = 3;
        int age = 10 / 0;
        try {
            TimeUnit.SECONDS.sleep(timeNumber);
        } catch (InterruptedException e) {

        }
        return "线程池：" + Thread.currentThread().getName() + "id: " + id + "\t" + "耗时(秒): " + timeNumber;
    }

    public String payment_Global_FallbackMethod() {
        return "Global 异常处理信息，请稍后重试";
    }

    // ===============服务熔断=================

    @HystrixCommand(fallbackMethod = "paymentCircuitBreaker_fallback", commandProperties = {
            @HystrixProperty(name = "circuitBreaker.enabled", value = "true"),//是否启用断路器
            @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold", value = "10"),//请求次数
            @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds", value = "10000"),//时间窗口期
            @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage", value = "60")//失败率达到多少后跳闸
    })
    public String paymentCircuitBreaker(@PathVariable("id") Integer id) {
        if (id < 0) {
            throw new RuntimeException("id 不能为负数");
        }
        String s = IdUtil.simpleUUID();
        return Thread.currentThread().getName() + "\t 调用成功，流水号：" + s;
    }

    public String paymentCircuitBreaker_fallback(@PathVariable("id") Integer id) {
        return "id 不能为负数，请稍后重试 id: " + id ;
    }
}
